1
Q
What role does a checksum serve?
A
It’s a mechanism for verifying data integrity.
2
Q
How does a checksum work?
A
A hashing function is used to calculate a checksum which is stored within the data. When the data is read, the same checksum is calculated and verified against the one present in the data.
Systems
flashcards
Decks in class (42)
# Cards
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Introduction17
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Distributed Systems38
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Data Partitioning8
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Indexes3
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Proxies11
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Redundancy & Replication10
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SQL Vs NoSQL16
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CAP Theorem6
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PACELC Theorem8
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Consistent Hashing16
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Long Polling, Sockets, and Server Events10
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Bloom Filters10
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Quorum14
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Leader and Follower3
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Heartbeats2
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Checksums2
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Strong vs. Eventual Consistency20
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Latency vs. Throughput14
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ACID vs. BASE13
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Read-Through vs. Write-Through (Cache)11
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Batch vs. Stream Processing10
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Load Balancer Vs. API Gateway9
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Direct Service Exposure vs. API Gateway8
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Proxy vs. Reverse Proxy7
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API Gateway vs. Reverse Proxy9
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Primary-Replica vs. Peer-to-Peer9
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SQL vs. NoSQL13
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Compression vs. Deduplication8
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Client-Caching vs. Server-Caching8
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REST vs. RPC12
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Data Intensive Applications2
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Long Polling vs. Websockets vs. Webhooks14
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CDN Usage vs. Direct Server Serving7
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Serverless vs. Traditional Architectures11
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Stateful vs. Stateless Architectures10
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Hybrid Cloud Storage vs. All Cloud Storage11
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Token Buckets vs. Leaky Buckets10
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Read Heavy vs. Write Heavy18
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Core Concepts8
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System Design Examples15
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Misc.8
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Key Technologies5
